# US 8,147,074 B2 · Positioning interfaces for projection display devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,147,074 B2 - Document ID: US8147074B2 - Status: Granted - Kind: B2 - Application number: 12/726,772 - Filed: 2010-03-18 - Published: 2010-07-08 - Granted: 2012-04-03 - Earliest claimed: 2003-07-16 - Assignees: Transpacific Image, LLC - Inventors: William J. Plut - Web page: https://patentgrep.com/patent/US8147074B2 ## CPC - G03B 21/16: Cooling; Preventing overheating - G03B 21/005: {Projectors using an electronic spatial light modulator but not peculiar thereto} - H04N 9/3141: {Constructional details thereof (details not peculiar to the presence of an electronic spatial light modulator G03B21/14)} - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract Described herein are devices that provide projection-type video output in a portable and flexible design. The design includes a projection chamber, a base, and an interface that permits relative positioning between the projection chamber and base. The base maintains the position of the display device. The projection chamber includes components responsible for the production of images based on received video data and components responsible for the projection of those images. Relative pointing between the projection chamber and base allows the projection chamber to be pointed—and an output projected image to be positioned—with minimal effort. ## Claims ### Claim 1 A display device, comprising: a base; a projection chamber configured to transmit light provided by a light source according to data included in a signal; and a positional interface coupled to the base and the projection chamber, wherein the positional interface is configured to stabilize the projection chamber in a first position relative to the base and a second position relative to the base, wherein the positional interface is further configured to facilitate moving the projection chamber from the first position to the second position, and wherein the positional interface comprises a valve configured to regulate air flow between the base and the projection chamber. ### Claim 2 (depends on 1) The display device of claim 1, wherein the positional interface further comprises a bendable tubing. ### Claim 3 (depends on 2) The display device of claim 2, wherein the bendable tubing is configured to bend according to a threshold force, and wherein the threshold force is greater than a maximum force applied onto the bendable tubing by a weight of the projection chamber. ### Claim 4 (depends on 3) The display device of claim 3, wherein the maximum force corresponds to a force applied onto the bendable tubing by the weight of the projection chamber in any position relative to the base. ### Claim 5 (depends on 1) The display device of claim 1, wherein the valve is coupled to a fan circuitry, and wherein the valve is further configured to regulate the air flow according to a usage of at least one fan controlled by the fan circuitry. ### Claim 6 (depends on 5) The display device of claim 5, wherein the valve is further configured to control an opening of an air duct between the base and the projection chamber, and wherein the opening depends on the usage of the at least one fan. ### Claim 7 (depends on 1) The display device of claim 1, wherein the positional interface further comprises at least one heat sink configured to dissipate absorbed heat. ### Claim 8 A method for displaying an image, comprising: transmitting light from a base to a projection chamber via a positional interface, wherein the light is transmitted according to data included in a signal; mechanically stabilizing the projection chamber in a first position relative to the base and a second position relative to the base using the positional interface, wherein the positional interface facilitates moving the projection chamber from the first position to the second position; and regulating air flow between the base and the projection chamber by controlling a valve included in the positional interface. ### Claim 9 (depends on 8) The method of claim 8, wherein the transmitting further comprises transmitting the light from the base to the projection chamber via a bendable tubing, and wherein the mechanically stabilizing further comprises bending the bendable tubing. ### Claim 10 (depends on 9) The method of claim 9, wherein the bending further comprises applying a force greater than a threshold force, and wherein the threshold force is greater than a maximum force applied onto the bendable tubing by a weight of the projection chamber. ### Claim 11 (depends on 10) The method of claim 10, wherein the force is greater than a maximum force applied onto the bendable tubing by the weight of the projection chamber in any position relative to the base. ### Claim 12 (depends on 8) The method of claim 8, further comprising monitoring a usage of at least one fan controlled by a fan circuitry, wherein the controlling the valve is based on the usage of the at least one fan. ### Claim 13 (depends on 12) The method of claim 12, further comprising opening an air duct between the base and the projection chamber based on the usage of the at least one fan. ### Claim 14 A display device, comprising: means for transmitting light from a base to a projection chamber according to data included in a signal; and means for mounting the projection chamber to the base in a first position relative to the base and a second position relative to the base, wherein the means for mounting facilitates moving the projection chamber from the first position to the second position, and wherein the means for mounting further comprises means for dissipating heat. ### Claim 15 (depends on 14) The display device of claim 14, wherein the means for dissipating heat comprises a valve configured to regulate air flow between the base and the projection chamber. ### Claim 16 (depends on 14) The display device of claim 14, wherein the means for dissipating heat comprises a means for monitoring a usage of at least one fan. ### Claim 17 (depends on 14) The display device of claim 14, wherein the means for dissipating heat comprises at least one heat sink.